prefer_const_constructors

Author: CarGuo

lib/common/event/event_bus.dart

@@ -11,7 +11,7 @@ import 'dart:async';
 /// filter events.
 ///
 class EventBus {
-  StreamController _streamController;
+  final StreamController _streamController;
 
   /// Controller for the event bus stream.
   StreamController get streamController => _streamController;

lib/common/localization/default_localizations.dart

@@ -11,7 +11,7 @@ class GSYLocalizations {
 
   ///根据不同 locale.languageCode 加载不同语言对应
   ///GSYStringEn和GSYStringZh都继承了GSYStringBase
-  static Map<String, GSYStringBase> _localizedValues = {
+  static final Map<String, GSYStringBase> _localizedValues = {
     'en': GSYStringEn(),
     'zh': GSYStringZh(),
   };

lib/common/net/api.dart

@@ -16,7 +16,7 @@ class HttpManager {
   static const CONTENT_TYPE_JSON = "application/json";
   static const CONTENT_TYPE_FORM = "application/x-www-form-urlencoded";
 
-  Dio _dio = Dio(); // 使用默认配置
+  final Dio _dio = Dio(); // 使用默认配置
 
   final TokenInterceptors _tokenInterceptors = TokenInterceptors();
 

lib/common/net/trending/github_trending.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: unnecessary_string_escapes
+
 import 'package:dio/dio.dart';
 import 'package:gsy_github_app_flutter/model/TrendingRepoModel.dart';
 import 'package:gsy_github_app_flutter/common/net/api.dart';

lib/common/utils/html_utils.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: unnecessary_string_escapes
+
 import 'package:gsy_github_app_flutter/common/style/gsy_style.dart';
 
 /// Created by guoshuyu

lib/page/trend/trend_bloc.dart

@@ -16,7 +16,7 @@ class TrendBloc {
   bool get requested => _requested;
 
   ///rxdart 实现的 stream
-  var _subject = PublishSubject<List<TrendingRepoModel>?>();
+  final _subject = PublishSubject<List<TrendingRepoModel>?>();
 
   Stream<List<TrendingRepoModel>?> get stream => _subject.stream;
 

lib/widget/flutter_json_widget.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: unnecessary_string_escapes
+
 import 'package:flutter/material.dart';
 
 class JsonViewerWidget extends StatefulWidget {

lib/widget/gsy_tabs.dart

@@ -798,7 +798,7 @@ class _TabBarState extends State<TabBar> {
   bool get _controllerIsValid => _controller?.animation != null;
 
   void _updateTabController() {
-    final TabController? newController =
+    final TabController newController =
         widget.controller ?? DefaultTabController.of(context);
     assert(() {
       if (newController == null) {
@@ -1208,7 +1208,7 @@ class _TabBarViewState extends State<TabBarView> {
   bool get _controllerIsValid => _controller?.animation != null;
 
   void _updateTabController() {
-    final TabController? newController =
+    final TabController newController =
         widget.controller ?? DefaultTabController.of(context);
     assert(() {
       if (newController == null) {
@@ -1492,7 +1492,7 @@ class TabPageSelector extends StatelessWidget {
         ColorTween(begin: fixColor, end: fixSelectedColor);
     final ColorTween previousColorTween =
         ColorTween(begin: fixSelectedColor, end: fixColor);
-    final TabController? tabController =
+    final TabController tabController =
         controller ?? DefaultTabController.of(context);
     assert(() {
       if (tabController == null) {

lib/widget/markdown/gsy_markdown_widget.dart

@@ -1,3 +1,5 @@
+// ignore_for_file: unnecessary_string_escapes
+
 import 'dart:io';
 
 import 'package:flutter/material.dart';

lib/widget/menu/src/arc_progress_indicator.dart

@@ -40,7 +40,7 @@ class ArcProgressIndicator extends StatelessWidget {
   Widget build(BuildContext context) {
     TextPainter? _iconPainter;
     final ThemeData theme = Theme.of(context);
-    final Color? _iconColor = iconColor ?? theme.colorScheme.secondary;
+    final Color _iconColor = iconColor ?? theme.colorScheme.secondary;
     final double? _iconSize = iconSize ?? IconTheme.of(context).size;
 
     if (icon != null) {